Yup that looks like a PHP function-name conflict...

Since around 2 years, we prefix all our functions and classes with cb to avoid potential conflicts, but this function exists since around 5 years in Community Builder...

Problem is that we can't rename it without breaking compatibility with a good part of the 100+ 3pd CB plugins, as it's used throughout plugins for language translations.

I hope that jDirectory will be able to rename it, and also start to prefix their functions with e.g. jdir , at least those used in mambots/plugins and modules so that they avoid all conflicts too.

Your only workaround so far is to unpublish the module and/or plugin of jDirectory, and only use the component.

You are welcome to link to my reply here in the jDirectory forum, and to add it to the jDirectory bugs-tracker, as we can't change it in CB for backwards-compatibility reasons as explained above. Sorry.